@article{StapperFranzenReuter2010,
  author    = {N. J. Stapper and I. Franzen-Reuter},
  title     = {Looking back on 15 years of research on bioindication with Jan-Peter Frahm in Bonn},
  journal   = {Bryophyte Diversity and Evolution},
  volume    = {31},
  number    = {1},
  pages     = {1 -- 4},
  year      = {2010},
}